🚀 NATS JetStream: K8s deployment + streams + job schema v1

- K8s deployment (2 replicas, PVC, initContainer для server_name)
- Streams definitions (MM_ONLINE, MM_OFFLINE, MM_WRITE, MM_EVENTS)
- Job payload schema (JSON v1 з idempotency)
- Worker contract (capabilities + ack/retry)
- Init streams script
- Оновлено ARCHITECTURE-150-NODES.md (Control-plane vs Data-plane)

TODO: Auth (nkeys), 3+ replicas для prod, worker-daemon implementation

infrastructure/kubernetes/nats/streams.yaml

@@ -0,0 +1,100 @@
+---
+# NATS JetStream Streams Configuration
+# Memory Module v1: 4 streams для різних класів даних та SLO
+
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: nats-streams-config
+  namespace: nats
+data:
+  streams.json: |
+    {
+      "streams": [
+        {
+          "name": "MM_ONLINE",
+          "subjects": [
+            "mm.embed.online",
+            "mm.retrieve.online",
+            "mm.summarize.online"
+          ],
+          "retention": "limits",
+          "max_age": 1800000000000,
+          "max_deliver": 3,
+          "ack_policy": "explicit",
+          "storage": "file",
+          "replicas": 3,
+          "discard": "old",
+          "duplicate_window": 300000000000
+        },
+        {
+          "name": "MM_OFFLINE",
+          "subjects": [
+            "mm.embed.offline",
+            "mm.index.offline",
+            "mm.backfill.offline"
+          ],
+          "retention": "limits",
+          "max_age": 2592000000000000,
+          "max_deliver": 10,
+          "ack_policy": "explicit",
+          "storage": "file",
+          "replicas": 3,
+          "discard": "old"
+        },
+        {
+          "name": "MM_WRITE",
+          "subjects": [
+            "mm.qdrant.upsert",
+            "mm.pg.write",
+            "mm.neo4j.write"
+          ],
+          "retention": "limits",
+          "max_age": 604800000000000,
+          "max_deliver": 10,
+          "ack_policy": "explicit",
+          "storage": "file",
+          "replicas": 3,
+          "discard": "old"
+        },
+        {
+          "name": "MM_EVENTS",
+          "subjects": [
+            "mm.event.audit",
+            "mm.event.status"
+          ],
+          "retention": "limits",
+          "max_age": 2592000000000000,
+          "ack_policy": "explicit",
+          "storage": "file",
+          "replicas": 3,
+          "discard": "old"
+        }
+      ],
+      "consumers": [
+        {
+          "stream_name": "MM_ONLINE",
+          "name": "online-worker-tier-a",
+          "durable_name": "online-worker-tier-a",
+          "ack_policy": "explicit",
+          "ack_wait": 30000000000,
+          "max_ack_pending": 5000,
+          "filter_subject": "mm.embed.online",
+          "deliver_policy": "all",
+          "max_deliver": 3,
+          "backoff": [1000000000, 5000000000, 30000000000]
+        },
+        {
+          "stream_name": "MM_OFFLINE",
+          "name": "offline-worker-tier-b",
+          "durable_name": "offline-worker-tier-b",
+          "ack_policy": "explicit",
+          "ack_wait": 300000000000,
+          "max_ack_pending": 10000,
+          "filter_subject": "mm.embed.offline",
+          "deliver_policy": "all",
+          "max_deliver": 10,
+          "backoff": [10000000000, 60000000000, 300000000000, 1800000000000]
+        }
+      ]
+    }